System.setProperty("org.jblas.threadpool.size", "4"); import org.jblas.FloatMatrix; public class MatrixMultiplicationExample { public static void main(String[] args) { FloatMatrix matrix1 = new FloatMatrix(new float[]{1, 2, 3, 4}, 2, 2); FloatMatrix matrix2 = new FloatMatrix(new float[]{5, 6, 7, 8}, 2, 2); matrix1.parallel().mmuli(matrix2); System.out.println(matrix1); } }